Governor



Jan. 12 1926i GovERNoR- n Filedseptj 22, 1921 Vll l I Il @0V .M 5 H [Patented Jan. l2, .1926;

' UNI-'ren STATES .PATENT OFFICE.

SAMUEL E. KURTZ, or sAc crry, IOWA.` j

GOVERNOR..

` Application filed September 2.2, 1921,. Serial No; 502,382.y I

To all whom :it may concern.'

Be it known thatI, SAMUEL E. KURTZ, a citizen of the United' States,residing at Sac City, in the county of Sac and State of Iowa, haveinvented a certain new and use- 4ful Improvement in Governors, `ofwhichthe following isa specification.

. This invention relates to improvements in governors, particularlyadapted to `be used in connection with internal combustion engines forcontrolling the flow of power iuid to. the engine. One of thedifficulties presented in the control of internal come `bustion enginesis to secure a governor -which 'will automatically control the speedwithin narrow limits at variable loads, and which will be sensitiveenough'v -for this purpose.

This invention has among other. objects to provide a governor whichshallbe extremely sensitive to variations in load and speedv of theengine, therebyl securing a proper andV accurate control of the speed ofspace and which'can be easily and quickly the engine under these varyingconditions between narrow limits, and' which shall at the same timeoccupy a comparatively small more fully set out in the followingdescrip-V trated in Fig. 1.- V

Fig. 3 is asectional view taken on' line 3-3`o.f Fig. 1;-

Fig. 4 is a sectional view` taken on line 4--4 of Fig. 2.

Fig. 5 is a section on the line ,5 5 of Fig.

,Fig 6 a view of the upper end `of the casing showing the device forholding thel valve open.

Like numerals referto like parts through- Q out the several igures.-

In the construction shown I provide a casing l open at the ends.A Thiscasing is 5o. intake of the engine. A 'valve 2 is located adapted to' beinserted at some pointin the within the casing and is pivotally mountedin any desired manner, as by'being connec'ted tothe stem 3. The valvestem 3 is mounted in the casing so as to be free to rotate? eee eedprejeeting'beyeed. the

ing as illustrated, the1 projecting end projecting within the enclosingdevice 4. The valve is moved by the flowing gas so as to vary theopening through whichl the gas Hows, and some means is providedv forproperly resisting this movementl of the valve.

As herein vshown I provide "a mainrei sisting device 5 which isillustrated as al spring and whichlisconnect'ed at one end to the valvestem vand at the. other end to a fixed device, such for example as thecasing or enclosing device 4.

I' have found by actual use that a4 single resisting device of thisvkind will not -give found that by adding an auxiliary opposing devicel6` whichopposes the main resisting device 5 ,and properly adjustingthese two .devices I can secure the control of the engine speed withinexceedingly narrowlim- I have shown the auxiliary opposing,

its.

"mA i the ycontrol-between narrow limitswhich in" some cases 1sessential, andI I have further device 6 as also consisting of va coiledspring,

one end of which is connected with the valve stem, and the other end 6awith a fixed'part;

such as the venclosing devicef4. The springs 5 and 6 are opposed to eachother. The spring 5 opposes the movementof the valve 1n response to theiow of gas through the valve casing, andthe spring 6 opposes thisspring5 and assists the flowing'gas in moving the valve. I have foundthat with Vthis construction the valve does not` act spas. modically,but is under perfect control, and

controls the speed of the engine vwithin the required narrow limits.

The springs 5 and 6 may be connected with 'the valve stem inanydesiredmanner. AI

have illustrated asimple manner of doing this which consists inAproviding a sleeve-7 which is provided with the slots 8 and 9.-

Oneend of the spring 5 is sli ped into one of, these slots, and one endothe spring -6 into the other slot as illustrated, and the sleeve is thenplaced on the valve stem and a 'fastening screw. The spring 6 must` be.secured thereto in any desired manner as by weaker or be adjustedso'as'to have lessstrength than the spring 5. Vide simple l and :easymeans for adjusting the two springs relatively. As herein shown theenclosing device 4 is rotatablyv mounted uponl a projection 8 on theyvalve casing.

.The springs 5 and 6 are woundv around, in

opposite directions, the valve stem,and' 1tV will be seen that thereferewhen the I prefer to proclosing device 4 is rotated in one direction,lVit will lweaken one spring and strengthen lthe other, and when rotatedin the .other direction, the spring which was previously weakened willbe strengthened, and the one previously strengthened, weakened.

In order to conveniently'move the enclosing device 4 and to also-hold itin any desired position I provide it with teeth 9. I also provide a,controllingdevice which has teeth which vengage'the teetliJQ. The partsare arranged so that when the controlling springs maybe easily and'quicldyrelativelyf adjusted to secure any adjustment desired,

3A0 which are held together by the seal 14 which device is rotated, theenclosing device 4 will also be-rotated.' The controlling device 10 maybe mounted in a bearing .11 and may -be rotated by means of'a head 12. Iprefer to have this controlling device a worm so that it will hold theenclosing device. 4 firmly in position without the necessity of an addi,

tional holding device. yIt will be seen that by means of thisconstruction the two( and that they will then be held in this adjusted4position. I prefer to. adjust the springs fproperly and then arrangethem so that they cannot be tampered with.

For this purpose I provide some suitable sealing device. l ing deviceconsists of a wire 13, the ends of will show Whenever thev device istampered with. This wire may be arranged in any desired position and Ihave shown it as passing through the head 12 of the controlling deviceand a hole inthe bearing 11 and also L passingthrough a hole intheremovable cap 15 of the enclosing device 4.

' I have found that in some cases there is la tendency of the valve tobe held closed by `the vacuum produced by the engine. In order thereforeto make the device moresensitive I provide some suitable means forrelieving this vacuum'. In the construction shown I provide means vforadmitting air into the passageway through which the gas flows throughthe engine on the side nearest the engine. Any suitable means for thispurpose maybe used. I have shown a convenient arrangement which doesaway with valves and other mechanism'and which con-V sists inprovidingone or moreopenings 16l in the valve casing nearest the endwhich isnearest the engine.' These holes if made small do n ot letinanyiappreciable amount of air during the ordinary Working of the devicebutin case of an undue vacuum produced bythe closing of the v/alve, theywilll y.let in a suflicient amount of air to relieve the vacuum and letthe retracting or opposv f ing spring act to open the valve.

I prefer to place the opening or openings 16 so that when the valve isworking in its normal manner these openings will be on the side of thevalve farthest from the engine,

As-hereinl shown this seal but'whenthe valve,is closedior nearly closedthese openings Will be on the sideoic the these o penings let in verylittle if any air, and what is let in is let in on the side of the valveaway fromrthe vacuum producing device, that' is the engine, while in thesecond case sufficient air passes therethrough to relieve `the vacuumand permit the valve to properly open. By this construction it is notnecessary to have a stop. because the springs can be so adjustedlrelatively as to have the valves stop in the right position.

valve nearest the engine. In the first 'case' woy A stop 17 can beprovided if desired. I

also prefer to provide some means for hold,- ing the valve open in theevent a spring o r springs'should break, so that the engine can beoperated without removing the valve.

This result is secured by providing an opening in the lcasing and thevalve stein, and a pin 18-passing through these holes so as to hold thevalve open. The valve can thus be held open in the eventanything happensto the springs, or it may be held open for any other reason if it isdesired' for any reason to holdit open. l

I claim: v 1. A governor for internal combustion engines comprising acasing, a valve stem pivoted in said casing, a valve in said casing andconnected withsaid pivoted stem so as to be pivotally mounted in thecasing and re- 1 sponsive tothe flow 'ofluid through the casing so as tochange its position to .vary im the 'effective opening through thecasing,

and a resisting device for resistingvthe ivotal movement of said valvedueto the uid flowing through the casing, and a-n auxiliary opposingdevice; for opposing theresisting' device.

2. Av governor for internal combustion engines comprising a casing, avalve stem pivoted in said casing, a valve in said casing and connectedwith said pivoted stem so` as to fbe pivotally mounted in the casing andresponsive to'the flow of fluid through the casing so as to change itsposition to vary the 4effective opening vthrough thecasing, and` I aresisting device for resisting the pivotal movement of said valve 'duetothe fluid flowing through the casing, and an'auxiliary oppesingdevicefor opposing the resisting `device, and means foi" varying relativelythe power of the resisting device and the 'auX- casing so as to changeits position to vary the effective opening through the casing a secondcasing, a spring iii said second casing connected with said valve steinso as torepivoted in said casing,

'with said. enclosing device land sist the pivotal` movement of thevalve 'due tothe pressure of said iluid, and a second spring in saidlatter casing connected with vsaid valve stem andvacting in the oppositedirection so as to oppose said lir'st mentioned spring. v

4. A governor for internal combustion engines comprising a casing, a.valve stem a valve in said casing and connected with saidpivoted stemso as to be pivotally mounted in the casing and"4 responsive tothe flow'of fluid throughthe casing so as tochange its position to vary theeffective opening through thecasing va second casing, a spring in saidsecond casing connected with 'said valve stem so as tovre sist thepivotal movement of the valve due to the pressure of said fluid, and asecond Spring in said latter casing connected with its. position tovvary the effective opening. f through the casin a valve`stem for saidvalve, a coiled spring connected with said valve stem, an enclosingdevice for said coiled spring, one end of the coiled springbeingconnected therewith, a second coiled spring `connected withsaidvalve stem and acting in opposition to the first-*mentioned spring, and

means for movingsaid enclosing device to adjust the relative strength ofsaidsprings.

combustion.

6. A governor for internal projects, a spring within 1 and having oneend connected with saidy engines comprising ay casing,

which said sections are connected androtatably mounted i'nposition, asecond casofsaid valve stem said second casing ing into -which theendvalve stem and the other end connected with said second casing, saidsecond casing rotatably mounted upon y the other casing and means forrotating saidv secondV casing, comprisingv a worm connected with onecasa valve inl said f -casing having two sections at an angle to eachother, one section having a greater eX- posed; area than the other,ajv'alve-stem to being 55 -ing and worm teeth connected with the' otherv i casing. 4 'n o governor `for internal combustion engines comprisinga casing, a movable.

valve in said casing adapted to be moved hy the power fluid passingthrough the casing so as to vary the opening through the casing, aresisting device for resisting the powerfluid, said casing and Jvalveadapted to be placedJ in the conduit leading .from the arburetor to -theengine, one or more openings in vsaid* casing for admitting airintel-that portion of the vpassageway, controlled bythe "valve when itis -substantially vmovement of said valve responsive to saidclosedbetween the valve ad the engine so as to relieve the.vacuumproduced therein permitthe valve to properly open, said v andI openingor openings arranged Aso that when the valve. is of said opening or sideof the valve louretor.d Si e at Sac ity, Statf Iowa, 1921.

county 'ofI Sac and, this 19th'day of September,

normally working the dischargeopenings will be'on 'the betweenA it and-the care.4

y SAMUEL E. KURTZ.'v w

